Giving it a four.
Great cast, visuals and sfx are bang on, On a whole the movie was very good though I feel Ridley Scott may have pushed a certain plot point into the movie so his prequels (Prometheus & Conevant) stayed relevant (not sure this was really required)
Lots of little and BIG easter eggs throughout and the twist at the end whilst a little shocking reminded me of two earlier Movies in the franchise.
This should open up the universe bit more but just got the feeling Ridley Scott got involved so fans would demand the final movie in his prequel trilogy.